SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6732d04e943c2dbe8f889530e60277162e07f016eeacb14b64457b882d0831b3' 
  AND token = 'sNnnCCB6Hv7eX4wu4ogTYj1ymFrvZIkPbsVcWVlOhtQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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