SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '220ebaf372c5a0caed2a85de8ff598e1b755b82c9de5c44b23628171f8a24d23' 
  AND token = 'y6WReVDzPwPBcY3uChN6HZCgyvrMhmT8HToLTDmzduM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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