Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f083ac8ae19613522c592e77a9344e8a04acee59aead83ca1236b50f02b5f021' 
  AND token = 'EKpzxsZm0X5uJ8XvQGiUJURV5MVonr3DV4J/ciIz/vU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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