Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '524f9215674009aecacbf1eec4b669cac1df7fb9ec9099eab442c65eb8268529' 
  AND token = 'znDQYNPlttSzCu4VBMJRKqOKWE1EBNFMKAfjcdil2l8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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