Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e6da29e7fe8cedbe0cde3f1800514adafb6645e25610daf0915cb27683dccd7' 
  AND token = 'WYBlEk1vPCnAyQ3fe7v8DVENJARs/qkdYkTdRNlTf7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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