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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ba0e8d619727e87ef6f4cc8328a3f1e893301b99d327914ca99ae1b9ced39ce' 
  AND token = '/m+d/t/VSF/N8D7Fi1Iuid3NIytPflOZ9MNJtf/K+4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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