Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56007094c50657e19536cbcaea1dcd26bc7456fcef74911b0b04cf0a87aad863' 
  AND token = '8wS9NbV+nDkr/BGuimTPaYvzINmy3sW8cMEO2uSuk2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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