Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf3c9b4dc3697b6c69dc6325dbd779e29165c039729f8353b5bcdc14b54b2543' 
  AND token = 'I4+0ePCLWcOndXZ/7JKJA1TdbncYGw52t59ZuL5OUAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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