Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e95842e1a14597abe66bc29f6b04ccdf7db728ff27251b4acb14b50ea1ce1170' 
  AND token = 'LykjMBrLgEXJQN1EZAtOdWV+qW8q+gbubMNudVKDhEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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