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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '105ee2bf41dc30ba1fca0cc7d5ae05f7c7da87d00478925ee1195798cbf295af' 
  AND token = 'Sa6v6pVvXOCpD7E5AcVMi7Kwv1bK3vaN8ANC5nwQ+8s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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