Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f2ee25ebef7202c14cd08891e2847cc45a392b1d2c80d5e2eb22666cbcb67e6' 
  AND token = 'T7AYbs5QQPYMLkIYkMUUvmWbK2t57aCPv1yZI9hiV/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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