Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '000ebaecaa6814d5c8e11bb592fa1742e74f6901cd6ab34677a31349839159df' 
  AND token = 'XsROIKj34hHxIMUNpI1FrLJkSm3M5QptH2TOf/0AQXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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