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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60d2210f6db4aae5c647b54565a6c22cdbf70d65622906b4bb6361a7c3e06d61' 
  AND token = 'VyYSrIsKw+vP+/b9vrR1geGciMZTsyXfjxE0BEwDWps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00091

JSON explain

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