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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77381f1e7e95ce830b4e2072320b355ec30518c10221169132ea5b5f18bc2d2b' 
  AND token = 'LMrdoc4EfY154fRFyc4vGF4qwb83Z9LXf5ZY7AslvLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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