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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5f0073e8e4c1c976d71d83d6a1a9d564851a3f1725f57bbb8c9f341132d736a' 
  AND token = 'A2sSPEhU7i0bwWH6v8/4X5aizNG04Vr+gYeRdtOlS4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00197

JSON explain

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