Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97fd758030592b331e3c5db47de60f4cbe5a3ef1d46e037c7f369d73dcbc2047' 
  AND token = '0mZYeYcr0QmIV6H1EikyNy6eDnY6eipF1nMG/da1nzY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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