Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '872a032f54a7444cff9c0727ba2e48de5f3e36e93939617a395f0e0773bc0d6a' 
  AND token = 'nbbwwWDWjTlML4J/YCxS9+8llLfHLKmdI1fOvLVACKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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