Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65bb248a35d763aa15faf965575007fd5a7b41c9b1e469ec761ac7843931d474' 
  AND token = '7cmRIeE1PyrDMxKg7VGYZZ7npIEPfGmfMTLQVGsI0ww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}