Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64168d92c48bac222e4ae2ecc034bf7d405d2dbeed755e9278ed88f48e6cdc48' 
  AND token = '5SKrD4LPgE2emsG5A206nyEJ8pDnnOmEaGlY2fM8YhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}