Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2aa9be35e8617e4d8a879ed4f14a7f34260c1f2786d0e185bf0507992cf2f27b' 
  AND token = 'UTN7kZm60GfpnfIpmpgcJfLIQmqCMiXJ2RflKZNDZWM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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