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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1d98fec5b2d1895b3dcd15b036fa4b2e230d5464a6d0bf6348ca4b02cf1bd62' 
  AND token = '8sSR14j/2dwlwHUn2HQa4Foj9HAGDCZis7GySKoaU34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00125

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}