Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42f5a8eaa9532c3241032b5099397c4a0233053471f116f470afa4571bd8d62c' 
  AND token = 'y8xuHBCoetQc80w9V8Tlu7QvLI2oI3TRZDsVtfoyZqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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