Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7daeff059cc6f4047df0a1544e59a982032e532c1c119cfc078a5f23c71b9bce' 
  AND token = 'ELT5GjnG4kAMuTflqxRIK+f8WYySo1DbDRCIEQuUaQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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