Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ca8180d633edb8d79f2693be956a1c82fc3eb0a8e019d68e94119a33f89c112e' 
  AND token = 'cW13lqQKGQnTtikvo1co+TkX+SAkzgdGwJojwk2hMRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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