Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e5048f2bfed43c6760a57959f5cf998430a6670cd3e68f47e503fef65ba7fa6' 
  AND token = 'qoc2zuajv9YueoIZ0drE+5SXV8s12q6ho2OHpQqPzL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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