Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '765e1fa77592959a623727010653aba590b8fa2ce6ce1aa94d65d51fd96560b3' 
  AND token = 'LOacupQ9Kl02hADYI9nSnfIm80Qft5vp5JiGAc43Djc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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