Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41cc27c9bea99bd4375085181c4fd693e3c87d390accc9de8e2e9434398cb8e6' 
  AND token = 'BlsDwfmNxBkae3BFO7rJws35/tcfFjUszebIXU9e2iI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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