Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f6c0a24c58177240b321e1f82a8f4b04f8257d004fd909a61b01fc2c69965181' 
  AND token = '2aX2WMl9YN5y9L+ZxSS6oJvxrQgQUo+yYn1QHACdREc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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