Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f1f328e29db6d9680a0321b6d2badd4097826df6f5baf16d8900bd8231b9bad' 
  AND token = '30L3Tyd2Bk1Y3NekWxujNRbjtC9gR/C747gqqreOQyc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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