Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b19a981c5b70a4b3b1652a268c94ec648aedd5593608243dd597990ec4d0d73' 
  AND token = 'w4HyEY+f2VrDYjy0R88hlvHvnV0FMTE+S0PQLGklYWI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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