SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5f986a9d3fd0b588bc3c3e8e76dff78091db6886aea1216206c0b410e9cb7fd1' 
  AND token = 'q/7FYfxUPfJUD2LifuR8/a9CYf5WKDqgPSzqt7GsM/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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