SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cc948760cdb795be52b58f1a79eca1e755b3aa3ca3ad50133531a0df4df9d83' 
  AND token = '6929QmFbnnrvWjBc/RPwsYmKPzA8mMDxtLv4qq+kzok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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