Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a4266e5054a1120f2da73cc2465c28986639cf3ef16218bd700d3f64541da784' 
  AND token = 'cCW04aTKk/g3K+M3iP5iIdfxo9wSda1P6I48BKYCsF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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