Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd33d90d911cb33bfa9836f7fb9006b22672022a23d310fefbe26b4e67d44c2e4' 
  AND token = 'pxMmJvszpHKDoMkuOEp66NvUAT8ycXDMEHPEoqvjW34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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