Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00ca118b77e895b2c57c4082549113ded869d7f5c9d08f3941e349c11c63dd2e' 
  AND token = 'Y2nj+TqIjjZTIjlpHgPOVVcr06HdFdegGVEJesjt364=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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