Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9d3d2f9223898cd8ef637ea5a6c1129cfafcd1cef09c1c4087488d6e484918e' 
  AND token = 'Ker7WD0mMDQHHEL9OXFdPN9p33cohoJlo0y6B3I9NFw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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