Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd2c1bec9ee05d6bc47ab95cae3661ca9fa7d00875bfe02ad61f51cf74f706f6' 
  AND token = 'j+9miK8KKek21p2l0zZQ9HEyHh8+VqgZin5i5FBwNfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}