Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf1946d48d3ae6599edec87ec14f543db94c80123f3d2a2df28ab7bfb2416770' 
  AND token = 'CgvDcWoe4h2hWZSKq1Zoemn+9WMPd+41l4poERrYLy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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