Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5616ae9da267b1b1c26764c4d5ad0a103a359124c62f6cc8b3ab064ee1bfcdf5' 
  AND token = '6RXPivYtRiHFisBKuM3GFix+CvmVzsMDo1H3p73u1+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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