Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f716aaea7e04223dc9c742d84fac7cb91d2a6da83ef89480bae9c45905ce6c8b' 
  AND token = 'eNbg1/g0FSXopnC49yB6+DElOqQ69CrmwUU9A4yDE2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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