Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95b3088df0c955449d1312e4100b5f557f198fc0e2ec65f8cc4612b305645323' 
  AND token = 'B2ilkt3/jahzmAncC+6Mo+AW9K0p4BVuow+xNtqlHg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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