Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0306027181cbbcf4d5cfccd8d330cd4d2bc6f601e1975554b0d2f849aab32e4' 
  AND token = 'T4gNeMARW/6djqf6jhpV3ji49lIgEl6m2U6+mav/CfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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