Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '09f031c77e433adeb10f285cc04946ff98d02fbfe2215e26bec9c11e6097c929' 
  AND token = 'Mp/a1Ld9Sbo9qqzcatss+iBay37o3IEnH1ASFfY5ryI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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