Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6e5797b1391bc97d08ae4429c33cefb125fbe5e836227d8765c3b03126967a69' 
  AND token = '7HYgz/1MwYePWDR2S/7+kMjQaL7EBRXy26OCXbFPfMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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