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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8493d98493a46667aa02f3d5276b9fdc7b8f69493ffc55a48fce584c7efbf8b0' 
  AND token = 'Y1pklArgEEC2dkuJXa9DH/luozX1f9iK2uk7ZAkVG/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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