Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ab82a16bfaa3cb306f8780a930698742ec454e5ba844cf9caf94b0155a0ce3e' 
  AND token = 'T1UDK7674YeuymLX8rCk5xq0ftrSLO6wsH4r+SOgry8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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