Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ed1afd6a4fb3023fa43b3b4ede0aabf69aa5e1fcf4ee513a78daba5485081f6b' 
  AND token = 'kDqj53eGPUbS8Xq3Z6U1c60jOjiiucJWjF1/QKYIc0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00297

JSON explain

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