SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2efc0fb3c1f32afcd4598d45062ad561d2bd8635363cadbcd07a2b339f2a426a' 
  AND token = 'zG3EeMF/jKXzVWXQkJ1BYLpN51AP5FCqA9ivyZ2PNQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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