Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed6a24189879311203b69246bab0bc3a438971e666ec8988b084ddab57d26be1' 
  AND token = 'OjrJoVTWRBpUtxoxZ3SsDpVW5kdgSo/w7VN6zjIReD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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