Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'beef1b40dcb3a2a5e553621713577c4fcf6c9872b6a2e56eff97cfdaf4a3382e' 
  AND token = '71GSkNFB0mceXgJhluUAxqu7JP4iGFcsuhGuwx2lLYk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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