Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f61128e4865ec569edaa3a8a30cca2a383073b2a1bfcdd2e742f54a9ad899cfe' 
  AND token = 'JOdnSyUW3xS5gab59Re7+FPiGUfKhpkcgwX8VFunmW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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