Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c0386cd0d36ad988c300a45aa84c905f6176c6084788aa28c577019bfcd195a0' 
  AND token = '32+acpf1nlj8xXnhNrp2uqMS9ytX9e05OY18qdFq7SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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