Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fa7d45c0c11b0bebdae1948a27b6553f7e67ae41c3948a747a29519aa7ddf65' 
  AND token = '8DwFipfIVv3e9nt3Aaa9sgClan4gJopPjQuCNRTCY7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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