Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43c983043cf954f0facebf0a4ef682bb825a297f6a948d5e23705d677f8d02e4' 
  AND token = 'Jpm8vMR5RU+CsJvzAeg2mWKngXc6XlvN6/4c1E2ikF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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