Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e983060ab10a06418680822c5210fba0bcbde5b9ad41c732a7acadae6a9297eb' 
  AND token = '11BEsTMgXNVheZ/y+eJ+R0xU5vFjYj4IO3r7eJizWL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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