Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0664727ed117f0f5ef2665d578bbf5eda388f9f0700698fd8f1835ad9901fdc' 
  AND token = 'bbz7HITv0YCZdOQNazSkBoFp9ZYysuOr1DP08vWlrXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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