Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1152d3d13c8f85e290bd004247ad1f45edf24f492c9fa8c4e8f2c7c16daf02c9' 
  AND token = '/7e2yFGap39tn0HLrgkhkeoeICuIzSFByxM5Q/9jxY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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