Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'affefc496f8935bc4dacc625d0e7bd904f1db150ba55696d951b0e6f410b7d5a' 
  AND token = 'G/E0sUHmCCNth+1VirsXD23b1x1QD9f+gtpO0tVSqos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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