Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '68986a14f9d3aade87418df070cd56baf33d9a61be654505a24577ebdf4fc838' 
  AND token = 'FuPftFJGj0G1KLEFrk5tprcfS8qbu88Hke8etdiE1iM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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