Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '9c00574a7139c41d9cb8367510eacaac4c365b0a6b2bc641c79ae0c669de462b' 
  AND token = 'ClQh+yLDxuR4PvNrWQlT7LT5A2ZjQxqlXN07oxu+/wY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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