Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa3990943482b9316287e8ce9138ff2f168f09f530d18cdaa78ba11022925959' 
  AND token = 'tf2KZou0OJ3EVfcX7KOd14F8D0vACS0TZvMMko/ApFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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