Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7037cd2f55bbef23b3581f2ee3a3d8b3a917f10f520b2de717c839e92bc4965' 
  AND token = 'q/37mPQbSbXukX9WZGOhfMf6cWHdhGrh2TS+XdLWt28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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