Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ed701aba7b2f1ef0d6974d0dc0e49e74af7f5d709a70ebc476d71650e55c2019' 
  AND token = 'YxIPl2AIax89fVaZzOBzUZCeZT88rwemESddjrdt2JA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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