Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b12c885b42a2ec95108905ca31687e9368164b2467c71731d56725d1a26fd71a' 
  AND token = 'nAOUqdCxNdybOIu2pPEANd3I6q0NleyWMJENJVcxv58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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