Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c38618db4e03143e6279ea2ea329258cc717747ff59084ab3f14b0b411db5ff4' 
  AND token = '9AGJTa5o/94Diw4Je6pFC5mJMmQmIRKG9rVosIKMOls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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