Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5bef5713b194e9455139e5ba3d8c88903879ad509d46cf1fb593eebc610ba845' 
  AND token = 'fbXSTbgb0EDRxNl6UutufoLa1UynbMbIRVSm6UxwWKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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