Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f11ac4f33d72e86b5266b92b3e9d3fe9daeca5a903b198de1b4496aa07bc1681' 
  AND token = 'o7nbzB9wKoeYGh/ouLQM9HayvFvaidmdLvx78FmYcSY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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