Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '97eb38f5db12fc05edacf43caa40b9016b2b2fbdee1ab726bc6aed3dc065c2de' 
  AND token = 'OwKLkklQRbuSSoyoScHP2PbHFgHnetz+QIomK88bl2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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