Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd00851961eed8b7aed9c1fdb59c2e34b9c495603bc0b255e1594fe4e74d08b9a' 
  AND token = '0PhOFksuRFAG7OY9o4GykZeG/hTLq91lGjWRaxZIulQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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