Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07d281adffa8ae139e0af623808d312c0b52e7696abec024742cdbbd48da1485' 
  AND token = 'V8nw8vCmJ3Q7AbiEs1I9tOa4TFueX/ff2bkyHa9JjKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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