Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e820d4510e034a727bb9092bd26fbba44a0aa325c72abaaa53f96169ad93d9a' 
  AND token = 'TQt3TtqMWJ1nbLC0TqTQX4+DN7LAfuMsaCw37G4lcpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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