Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7cca04debd2f7facc6f1002d14ce48229dd36551d63eeac6c08480cf154892f' 
  AND token = '2Q1BkvPg+H14OVojxCOfkFUnRUn+RbfDM4bMHT1Ie6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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