Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c05b9526dd35324b4f2c6cc70c399b32b53fbe4fea30eda1ddeb0dfbf189751a' 
  AND token = 'J73mZbbABqcM5tLVchhPPK6U1E4S6UTgcGy2k5XNDhM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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