Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cce764f385653731471551f39cf3c89c4c04c94d5bcdbd289e3168f67563e45e' 
  AND token = '84ECeR5PSoWFC2s44m1Ci3lZNZXuSDz+Df0HV6p8e/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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