Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32cdaff938139e828366d7da95f8f5cb1a308654e213600201e16cda8cf09ff7' 
  AND token = '+IAKMMfFWnu6dLMegYs/IqTInWxMp/Cbju+I73PHwBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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