Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8d4d8abb0842720d20a1f4177162d29739b8531b3c7f778edb5d10c1e5cb1950' 
  AND token = 'Q3StVe9QyQE3vUnRbgwGg+3R4XdQ8UtsCYHim5/NLB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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