Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b98b3a46fb2aad150aac1a181d8b66617549c541dd6d6ed2631aceab886eabf5' 
  AND token = 'KQi54/eo4CgS3hr5jr62nKSeiIXx+ykb2HJDuKIrTPw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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