Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ee28972de5865f8e3604a0a8fc810710cb278a0c3bd50c4d337feba45955a8b' 
  AND token = 'wuI6u3raMDWpiOGolKo5qiv41ZjS4Khz8V0Kx9O7910=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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