Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a964d96aea2a9295c9283285dbf22f40de6bc317686973e08c8914dece30b66c' 
  AND token = '0xVh1dpagpzFTS6xD5CVFiUUR0aW1766Fp7xyw6LYy8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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